Research on Properties of Pressed Silicate Materials of Non-autoclave Hardening with the Addition of Synthetic Tobermorite-Like Calcium Hydrosilicates

At the present stage of development of construction materials science, the tasks of producing high-performance construction composites of a new generation, including those using natural and technogenic raw materials, are of particular relevance. To a greater extent, these requirements are met by wall silicate materials. Currently, the raw material base for the production of silicate materials is not expanding, and the use of quartz sand in the technology determines the high energy intensity of the synthesis of new formations in the CaO-SiO₂-H₂O system, as well as the production process as a whole. In the production of wall silicate materials using non-autoclave technology, instead of quartz sand, it is possible to use clay rocks of an incomplete stage as the main component. The question of study of influence of synthetic tobermorite-like calcium hydrosilicates (STCH) on synthesis system CaO–AI₂O₃–SiO₂–H2O and properties of extruded silicate materials of non-autoclave hardening using clay rocks of unfinished stage of formation is relevant. In the course of research, the nature of the influence of synthetic tobermorite-like calcium hydrosilicates (STCH) on the physical and mechanical properties of non-autoclaved silicate composites based on unconventional aluminosilicate raw materials represented by clay rocks of the incomplete stage of mineral formation was established. The rational content of the STCH additive is 1 wt.%, and with an increase in the percentage, the strength characteristics of finished products decrease.